From: Martin Kronbichler <kronbichler@lnm.mw.tum.de>
Date: Fri, 17 Jul 2020 11:13:47 +0000 (+0200)
Subject: Fix typo in computation of speed of sound
X-Git-Tag: v9.3.0-rc1~1275^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F10713%2Fhead;p=dealii.git

Fix typo in computation of speed of sound
---

diff --git a/examples/step-67/step-67.cc b/examples/step-67/step-67.cc
index 39653594d5..d33d595ea4 100644
--- a/examples/step-67/step-67.cc
+++ b/examples/step-67/step-67.cc
@@ -565,7 +565,7 @@ namespace Euler_DG
   // \frac{\lambda}{2}\left[\mathbf{w}^--\mathbf{w}^+\right]\otimes
   // \mathbf{n^-}$, where the factor $\lambda =
   // \max\left(\|\mathbf{u}^-\|+c^-, \|\mathbf{u}^+\|+c^+\right)$ gives the
-  // maximal wave speed and $c = \sqrt{\lambda p / \rho}$ is the speed of
+  // maximal wave speed and $c = \sqrt{\gamma p / \rho}$ is the speed of
   // sound. Here, we choose two modifications of that expression for reasons
   // of computational efficiency, given the small impact of the flux on the
   // solution. For the above definition of the factor $\lambda$, we would need